hdu1004

import java.util.Scanner;

public class HDU1004 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = 0, f = 0;
        String a = null;
        while (sc.hasNext()) {
            n = sc.nextInt();
            int pre = 0;
            if (n > 0 && n <= 1000) {
                String[] s = new String[n];
                int i = 0;
                while (n > 0) {
                    a = sc.next();
                    if (a.length() > 0 && a.length() <= 15) {
                        s[i] = a;
                        i++;
                        n--;
                    } else {
                        return;
                    }
                }
                for (int j = 0; j < s.length - 1; j++) {
                    int now = 1;
                    if (s[j].equals(s[j + 1]))
                        now++;
                    if (now > pre) {
                        pre = now;
                        f = j;
                    }
                }
                System.out.println(s[f]);
            } else if (n == 0) {
                return;
            }
        }
    }
}